Set for pneumatic riveters.



, PATENTED NOV. 1, 1904.

W. H. VAN SIGKEL. SET FOR PNEUMATIC EIVETERS.

APPLICATION FILED OCT. 2, 1903.

N0 MODEL.

ZWU J-/. wa -g g BY mmvron L WITNESSES UNITED STATES I Patented November1, 1904.

PATENT OFFICE.

WVILBER H. VAN SIOKEL, OF NEW YORK, N. Y., ASSIGNOR TO. THOS. H. DALLETT(30., OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF NEIN JERSEY.

SET FOR PNEUMATIC RIVETERS.

SPECIFICATION forming part of Letters Patent No. 773,770, dated November1, 1904.

Application filed October 2, 1903.

T0 at whom, it may concern:

Be it known that I, WILBER H.VAN SIcKnL, a citizen of the United States,residing at New York city, county of New York, and State of New York,have invented a new and useful Improvement in Sets for PneumaticRiveters, of which the following is afull, clear, and exact description,reference being had to the accompanying drawings, which form a part ofthis specification.

Heretofore the sets for pneumatic riveters have been constructed of asolid piece of metal. Under such conditions the area of the set beingconsiderable its mass, and therefore weight, is great. For this reason aconsiderable part of the force of the striking piston is taken up inovercoming this weight, and as a consequence the effect or blow of theset is not as great as it should be. Up to this time the requirementthat the set shall be integral throughout prevented a lightening of theset by making the same hollow. The necessity of the integrality of theset is because the jar and vibration would loosen any non-integralparts. I- have discovered that I can lighten up the striker and stillmaintain its integrality by forming the same, initially, in two parts,one or both of which is cored out or hollowed out and then uniting thetwo parts together by welding.

I will first describe the preferred form or embodiment of my invention,which is disclosed in the accompanying drawings, and then point out theinvention in the claims.

In the drawings, Figure l is a longitudinal section of the set in twoparts prior to uniting. Fig. 2 is an end view of Fig. 1. Fig. 3 is aView similar to Fig. l, with the parts united by welding. Fig. {I is anend view of Fig. 3. Fig. 5 is a view similar to Fig 3, with weldingburremoved. Fig. 6 is an end view of Fig. 5.

A is the head of the set, having the striking end a.

B B denote the stem or shank, having the blow-receiving end Z). As maybe seen by reference to Fig. 1,'the shank is in two portions and is madeslightly larger than ultimately Serial No. 175,475. (NoruodeL) inghollow it is materially lightened. At the same time neither theintegrality of the striking or blow-receiving end of the set northeintegrality of the set as a whole is aflected.

Of course I do not intend to limit myself to the specific constructionwhere the severance and weld are made midway of or at any point upon theshank, as the severance and weld may be made at any desired point whichenables the coring or hollowing to be accomplished and the integralityof the set maintained.

Having now fully described my invention, what I claim, and desire toprotect by Letters Patent, is

1. .A set formed of two parts integrally united together in which thepart adjacent to the striking end is hollow.

2. A set formed of two parts integrally united together in which thepart comprising the blow-receiving head is hollow.

3. A set formed of two parts both of which are hollow, said two partsbeing integrally united together.

45. A set formed of two parts, one of which is hollow, said two partsbeing integrally united together.

5. A set formed of a plurality of parts, one at least of which ishollow, said parts being integrally united together;

In testimony of which invention I have hereunto set my hand atPhiladelphia on this 29th day of September, 1903.

- WILBER H. VAN SIOKEL.

Witnesses:

M. F. ELLIs, WILLIAM B. MARKs.

